Differential

A futures contract defines a standard commodity and delivery framework, but real commodities may have different grades or arrive at different approved locations, so a differential prices permitted differences within that framework. The standard delivery unit is sometimes described as the par unit, and an alternative can carry a premium when its specified characteristics warrant more value, or a discount when the rules assign less.

The direction follows the contract, not the seller's preference. Eligibility comes before adjustment, since goods must satisfy the approved quality and location conditions and offering a discount cannot make an otherwise unacceptable delivery valid.

The Commodity Futures Trading Commission explains that delivery points, grades and corresponding differentials affect contract behaviour, with appropriate alternatives adding deliverable supply and reducing congestion while poorly designed allowances can distort what the contract represents. Differentials should relate to commercial price differences, because a fixed adjustment far from actual market conditions can influence which goods sellers prefer to deliver, and the cheapest permitted delivery may change as those conditions move.

The adjustment is part of settlement economics, as it can change the invoice value even though the quoted futures price is the same, so a business comparing alternatives needs the actual adjusted amount. Transport and storage remain separate costs, since an allowed location discount does not automatically reimburse the buyer for every onward expense.

Quality also affects the buyer's use, because a permitted grade may be less convenient for a particular production process even after its price is adjusted, and contract acceptability and suitability for the user's factory are different tests. A differential can influence delivery choices, since the short side may select an eligible alternative under the rules, so a long hedge should not assume that the contract delivers the exact local grade it normally buys.

This creates a basis-risk question, as local cash prices and contract-adjusted values can move differently, and a futures hedge can reduce broad price exposure while leaving a mismatch involving grade or location. The adjustment is not the same as the delivery point, which identifies where delivery is allowed, while the differential changes the permitted invoice economics.

It is also different from a speculative options premium, since no separate call or put needs to be purchased to create this contract allowance and the right to choose eligible delivery alternatives comes from the futures terms. The relevant schedule can change between products or contract specifications, so a manager should read the applicable version before settling a position, and a historical allowance should not be copied into a current invoice without checking.

For a non-finance manager, translate the quoted price into delivered usable cost. Check eligibility, the prescribed adjustment and the costs beyond delivery.

A differential makes a defined comparison possible; it does not make every permitted alternative equally attractive to the business.